The 4th-grade curriculum by these authors is known for its high level of difficulty, focusing on:
The 4th-grade edition includes more creative projects and historical snippets (e.g., about Peter the Great or Lomonosov) that GDZ helps guide. The "Critical" View: The 4th-grade curriculum by these authors is known
Many tasks are closer to "Olympiad-style" problems, requiring students to look for non-standard solutions. The 4th-grade curriculum by these authors is known